Quarterly report pursuant to Section 13 or 15(d)

5. STOCK OPTIONS AND WARRANTS (Details - Warrants by exercise price)

5. STOCK OPTIONS AND WARRANTS (Details - Warrants by exercise price)	9 Months Ended
	Jan. 31, 2020 $ / shares shares
$0.12 [Member]
Number of Warrants exercisable \| shares	17,000,000
Weighted average remaining contractual term	11 months 8 days
Weighted average exercise price exercisable \| $ / shares	$ 0.12
$0.11 [Member]
Number of Warrants exercisable \| shares	10,000,000
Weighted average remaining contractual term	1 month 20 days
Weighted average exercise price exercisable \| $ / shares	$ 0.11
$0.065 [Member]
Number of Warrants exercisable \| shares	769,231
Weighted average remaining contractual term	1 year 10 months 17 days
Weighted average exercise price exercisable \| $ / shares	$ 0.065
$0.0575 [Member]
Number of Warrants exercisable \| shares	869,565
Weighted average remaining contractual term	2 years 2 months 5 days
Weighted average exercise price exercisable \| $ / shares	$ 0.0575
$0.03 [Member]
Number of Warrants exercisable \| shares	2,500,000
Weighted average remaining contractual term	2 years 9 months 25 days
Weighted average exercise price exercisable \| $ / shares	$ 0.03
$0.026 [Member]
Number of Warrants exercisable \| shares	1,923,077
Weighted average remaining contractual term	3 years 4 months 28 days
Weighted average exercise price exercisable \| $ / shares	$ 0.026
$0.025 [Member]
Number of Warrants exercisable \| shares	2,000,000
Weighted average remaining contractual term	2 years 5 months 23 days
Weighted average exercise price exercisable \| $ / shares	$ 0.025
$0.018 [Member]
Number of Warrants exercisable \| shares	1,388,889
Weighted average remaining contractual term	3 years 3 months 29 days
Weighted average exercise price exercisable \| $ / shares	$ 0.018
$0.011 [Member]
Number of Warrants exercisable \| shares	2,272,727
Weighted average remaining contractual term	3 years 9 months
Weighted average exercise price exercisable \| $ / shares	$ 0.011
$0.01 [Member]
Number of Warrants exercisable \| shares	2,500,000
Weighted average remaining contractual term	4 years 4 months 28 days
Weighted average exercise price exercisable \| $ / shares	$ 0.01
$0.009 [Member]
Number of Warrants exercisable \| shares	3,333,333
Weighted average remaining contractual term	4 years 1 month 24 days
Weighted average exercise price exercisable \| $ / shares	$ 0.009
$0.005 [Member]
Number of Warrants exercisable \| shares	3,500,000
Weighted average remaining contractual term	4 years 5 months 1 day
Weighted average exercise price exercisable \| $ / shares	$ 0.005
Warrants [Member]
Number of Warrants exercisable \| shares	48,056,822
Weighted average remaining contractual term	4 years 6 months 7 days
Weighted average exercise price exercisable \| $ / shares	$ 0.07